Search results for " evaluation."
showing 10 items of 1351 documents
Automatic Generation of Custom Tourist Routes
2019
In this paper we present a new tool for the automatic generation of custom tourist routes. Starting from the user preferences (place to visit, starting and ending points, available time, favourite types of attractions) our system is able to extract information from the Web and to suggest a custom route to the user. Our system is based only onto online information, which is dynamically extracted at the query time, so that it can work for every location in the world, with no restrictions. Furthermore, our method does not require any user intervention, unless the input parameters. Our system is also able to give to the users supplementary information about the route stops, as a photo slideshow…
Vulnerability evaluation of distributed reputation management systems
2017
In distributed environments, Reputation Management Systems (RMSs) aim to estimate agents' trustworthiness by exploiting different sources of information. The distributed nature of these systems makes them vulnerable to several types of security attacks, and the response provided by a specific RMS depends on various factors, such as the algorithms adopted for estimating the reputation values and the communication protocols used to enable the cooperation among agents. This work examines the most important security attacks against RMSs and proposes a set of metrics for a quantitative evaluation of the RMS vulnerabilities. A parallel simulation framework is used to automatically give a vulnerab…
An evaluation of recent local image descriptors for real-world applications of image matching
2019
This paper discusses and compares the best and most recent local descriptors, evaluating them on increasingly complex image matching tasks, encompassing planar and non-planar scenarios under severe viewpoint changes. This evaluation, aimed at assessing descriptor suitability for real-world applications, leverages the concept of approximated overlap error as a means to naturally extend to non-planar scenes the standard metric used for planar scenes. According to the evaluation results, most descriptors exhibit a gradual performance degradation in the transition from planar to non-planar scenes. The best descriptors are those capable of capturing well not only the local image context, but als…
Investigating Avatar Influence on Perceived Cognitive Load and Bimanual Interactions with Touchless Interfaces
2017
In recent years, touchless-enabling technologies have been more and more adopted for providing public displays with gestural interactivity. This has led to the need for novel visual interfaces aimed at solving issues such as communicating interactivity to users, as well as supporting immediate usability and "natural" interactions. In this paper, we focus our investigation on a visual interface based only on the use of in-air direct manipulations. Our study aims at evaluating whether and how the presence of an Avatar that replays user’s movements may decrease the perceived cognitive workload during interactions. Moreover, we conducted a brief evaluation of the relationship between the presen…
Retinal image synthesis through the least action principle
2020
Eye fundus image analysis is a fundamental approach in medical diagnosis and follow-up ophthalmic diagnostics. Manual annotation by experts needs hard work, thus only a small set of annotated vessel structures is available. Examples such as DRIVE and STARE include small sets for training images of fundus image benchmarks. Moreover, there is no vessel structure annotation for a number of fundus image datasets. Synthetic images have been generated by using appropriate parameters for the modeling of vascular networks or by methods developing deep learning techniques and supported by performance hardware. Our methodology aims to produce high-resolution synthetic fundus images alternative to the…
Piecewise planar underwater mosaicing
2015
A commonly ignored problem in planar mosaics, yet often present in practice, is the selection of a reference homography reprojection frame where to attach the successive image frames of the mosaic. A bad choice for the reference frame can lead to severe distortions in the mosaic and can degenerate in incorrect configurations after some sequential frame concatenations. This problem is accentuated in uncontrolled underwater acquisition setups as those provided by AUVs or ROVs due to both the noisy trajectory of the acquisition vehicle — with roll and pitch shakes — and to the non-flat nature of the seabed which tends to break the planarity assumption implicit in the mosaic construction. These…
METHODOLOGICAL PROPOSAL TO EVALUATE THE HUMAN RIGHTS APPROACH IN PUBLIC POLICIES. A CASE STUDY OF OPEN GOVERNMENT PUBLIC POLICY IN MEXICO AND ITALY
2022
La investigación parte de la premisa de que para una mayor correspondencia de los procesos de política pública con los requerimientos de la sociedad contemporánea, éstos deben desarrollarse en un entorno policontextual y policéntrico. Es decir, en escenarios en los que se propicie su apertura a los diferentes contextos sociales y la intervención de diversos actores. En atención a esto, se optó por efectuar un estudio de tipo analítico-sintético, que involucrara las variables de enfoque de derechos humanos—relacionada con el policontextualismo y policentrismo de una acción— y la de política pública—relativa a la técnica/método conforme a la cual se desarrolla de forma sistemática la acción p…
ANALYZING VIDEOGAMES TO LEARN HOW TO THINK CRITICALLY
2013
The reflections contained in this research work deal with the educational challenge launched by the cultural and social phenomenon of videogames, which have become more than pure forms of entertainment and fun, more and more metaphors of the big game of the reality of life. Many of the earliest scholarly studies emanated from the research laboratories of pedagogical departments were typically concerned with the possible effect of games and young players. For a long time videogames have been forgotten as educative medium because they have been considered as mere trifles – low art – carrying none of the weight, gravitas or credibility of more traditional media. The seemingly bewildering varie…
Corresponsabilità educativa: famiglie e docenti per lo sviluppo della maturità professionale e personale degli adolescenti
2018
La ricerca si inserisce nel variegato panorama di studi e ricerche relativi alla corresponsabilità educativa tra scuola e famiglia per la promozione del processo di maturazione personale e professionale negli adolescenti. Il contributo mostra il percorso di ricerca che ha coinvolto, 336 alunni, 30 genitori e 31 docenti di 15 classi terze di scuole secondarie di primo grado della provincia di Palermo da settembre 2018 a marzo 2019. L’intervento ha previsto la progettazione, la costruzione e la sperimentazione di una serie di attività attraverso le quali gli insegnanti in collaborazione con i genitori hanno potuto sviluppare la capacità di progettazione e di scelta del futuro professionale ne…
Discovery of recurring behavioural sequences in Wistar rat social activity: Possible support to studies on Autism Spectrum Disorders.
2017
This study was undertaken to investigate whether, in rat interactive activities, recurring sequences of behavioural events might be identified and how and to what extent each component of the pair is involved. To this aim, the multivariate temporal-pattern (t-pattern) analysis was applied to the social interactions of 9 pairs of male Wistar rats tested in open field. Interactive activities were classified into intra- and inter-subjects. Quantitative evaluations showed that intra-subject behavioural elements represented 62.37% and inter-subject ones 37.63% of the comprehensive behaviour. T-pattern analysis revealed the presence of 221 different t-patterns organized in four different categori…